| 摘要 |
A valve device ( 10 ) for a hydraulic servo-steering arrangement includes two valve elements ( 18, 14 ) which can be rotated from a neutral position relative to each other, in order to thereby achieve the superimposition of an additional steering moment. The valve device ( 10 ) further includes a linear actuator ( 33 ) and a gear ( 20 ) coupling the two valve elements ( 18, 14 ) to each other. The gear ( 20 ) converts a linear stroke of the linear actuator ( 30 ) into a rotation. The gear ( 20 ) includes a first cogwheel ( 22 ) with teeth inclined in a first direction in relation to the axial direction of the cogwheel. The first cogwheel ( 20 ) is coupled to the first valve element ( 18 ). The gear ( 20 ) further includes a second cogwheel ( 30 ) with teeth inclined in a second direction opposed to the first direction. The second cogwheel ( 30 ) is axially displaceable by the linear actuator ( 33 ). |
